并配置其GPIO引脚和主模式下的时钟等参数，该函数原型如下所示：esp_err_t spi_bus_initialize(spi_...
;复制代码该函数的形参描述如下表所示：表22.3.2.1 spi_bus_initialize()函数形参描述返回值：ESP_...
设置完成之后,还需要使用spi_bus_initialize()函数安装 SPI 总线,该函数原型如下: esp_err_t spi_bus_initialize(spi_host_device_t host_id, const spi_bus_config_t *bus_config, spi_dma_chan_t dma_chan); 1. 2. 向总线中添加设备 上文书讲到,SPI 是一个总线,SPI 总线上可以挂在多个设备,所以总线...
初始化SPI总线:使用spi_bus_initialize()函数初始化SPI总线。这个函数需要一个spi_bus_config_t结构体,该结构体包含了SPI总线的配置信息,如时钟速度、数据模式等。 添加SPI设备:使用spi_bus_add_device()函数将SPI设备添加到SPI总线上。这个函数需要一个spi_device_interface_config_t结构体,该结构体包含了SPI设备...
Re: ESP-32 S3 Cannot initialize multiple spi devices (host_id not initialized) Postbyshawny1234»Thu Nov 16, 2023 9:27 am I"m unsure about a second initialization, when i uncomment the spi_bus initialize with this code: Code:Select all ...
我使用ESP32S3的SPI master模式控制一个SPI器件,配置为mode=3,但是初始化完成后,时钟线一直保持在低电平。 我查了是在spi_bus_initialize函数调用spicommon_bus_initialize_io里面再调用esp_rom_gpio_connect_out_signal(bus_config->sclk_io_num, spi_periph_signal[host].spiclk_out, false, false);之后时钟...
(); host.slot = SPI2_HOST; spi_bus_config_t bus_cnf = { .mosi_io_num = pin_MOSI, .miso_io_num = pin_MISO, .sclk_io_num = pin_CLK, .quadhd_io_num = -1, .quadwp_io_num = -1, .max_transfer_sz = 400000, }; spi_bus_initialize(host.slot, &bus_cnf, SPI_DMA_CH_...
cfg_bus.intr_flags = 0;if(ESP_OK != spi_bus_initialize(SPI2_HOST, &cfg_bus, SPI_DMA_CH...
ESP_LOGI(SPI_TAG, "bus initialize successed!\n"); } ret = spi_bus_add_device(SPI2_HOST, &devcfg, spi); if (ret != ESP_OK){ ESP_LOGI(SPI_TAG, "device config error\n"); }else{ ESP_LOGI(SPI_TAG, "device config success\n"); ...
*ret=spi_bus_initialize(LCD_HOST, buscfg, SPI_DMA_CH_AUTO); ESP_ERROR_CHECK(*ret); //Attach the LCD to the SPI bus *ret=spi_bus_add_device(LCD_HOST, devcfg, spi); ESP_ERROR_CHECK(*ret); } 2、写1R1D Code: Untitled.c Select all lcd_write_1R1D(0xFE, 0x20); void ...